21308455980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{1949}}^1\times {\mathrm{8677}}^1$

素因数の和:10648

約数の個数: 144

約数和(自身を含む): 73915732800

約数和(自身を除く): 52607276820

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 1949, 3898, 5847, 7796, 8677, 9745, 11694, 13643, 17354, 17541, 19490, 23388, 26031, 27286, 29235, 34708, 35082, 38980, 40929, 43385, 52062, 54572, 58470, 60739, 68215, 70164, 78093, 81858, 86770, 87705, 104124, 116940, 121478, 122787, 130155, 136430, 156186, 163716, 173540, 175410, 182217, 204645, 242956, 245574, 260310, 272860, 303695, 312372, 350820, 364434, 390465, 409290, 491148, 520620, 546651, 607390, 613935, 728868, 780930, 818580, 911085, 1093302, 1214780, 1227870, 1561860, 1822170, 2186604, 2455740, 2733255, 3644340, 5466510, 10933020, 16911473, 33822946, 50734419, 67645892, 84557365, 101468838, 118380311, 152203257, 169114730, 202937676, 236760622, 253672095, 304406514, 338229460, 355140933, 473521244, 507344190, 591901555, 608813028, 710281866, 761016285, 1014688380, 1065422799, 1183803110, 1420563732, 1522032570, 1775704665, 2130845598, 2367606220, 3044065140, 3551409330, 4261691196, 5327113995, 7102818660, 10654227990, 21308455980]

約数ペア:

[(1, 21308455980), (2, 10654227990), (3, 7102818660), (4, 5327113995), (5, 4261691196), (6, 3551409330), (7, 3044065140), (9, 2367606220), (10, 2130845598), (12, 1775704665), (14, 1522032570), (15, 1420563732), (18, 1183803110), (20, 1065422799), (21, 1014688380), (28, 761016285), (30, 710281866), (35, 608813028), (36, 591901555), (42, 507344190), (45, 473521244), (60, 355140933), (63, 338229460), (70, 304406514), (84, 253672095), (90, 236760622), (105, 202937676), (126, 169114730), (140, 152203257), (180, 118380311), (210, 101468838), (252, 84557365), (315, 67645892), (420, 50734419), (630, 33822946), (1260, 16911473), (1949, 10933020), (3898, 5466510), (5847, 3644340), (7796, 2733255), (8677, 2455740), (9745, 2186604), (11694, 1822170), (13643, 1561860), (17354, 1227870), (17541, 1214780), (19490, 1093302), (23388, 911085), (26031, 818580), (27286, 780930), (29235, 728868), (34708, 613935), (35082, 607390), (38980, 546651), (40929, 520620), (43385, 491148), (52062, 409290), (54572, 390465), (58470, 364434), (60739, 350820), (68215, 312372), (70164, 303695), (78093, 272860), (81858, 260310), (86770, 245574), (87705, 242956), (104124, 204645), (116940, 182217), (121478, 175410), (122787, 173540), (130155, 163716), (136430, 156186)]