21913320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1277}}^1$

素因数の和:1315

約数の個数: 128

約数和(自身を含む): 77293440

約数和(自身を除く): 55380120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 30, 33, 39, 40, 44, 52, 55, 60, 65, 66, 78, 88, 104, 110, 120, 130, 132, 143, 156, 165, 195, 220, 260, 264, 286, 312, 330, 390, 429, 440, 520, 572, 660, 715, 780, 858, 1144, 1277, 1320, 1430, 1560, 1716, 2145, 2554, 2860, 3432, 3831, 4290, 5108, 5720, 6385, 7662, 8580, 10216, 12770, 14047, 15324, 16601, 17160, 19155, 25540, 28094, 30648, 33202, 38310, 42141, 49803, 51080, 56188, 66404, 70235, 76620, 83005, 84282, 99606, 112376, 132808, 140470, 153240, 166010, 168564, 182611, 199212, 210705, 249015, 280940, 332020, 337128, 365222, 398424, 421410, 498030, 547833, 561880, 664040, 730444, 842820, 913055, 996060, 1095666, 1460888, 1685640, 1826110, 1992120, 2191332, 2739165, 3652220, 4382664, 5478330, 7304440, 10956660, 21913320]

約数ペア:

[(1, 21913320), (2, 10956660), (3, 7304440), (4, 5478330), (5, 4382664), (6, 3652220), (8, 2739165), (10, 2191332), (11, 1992120), (12, 1826110), (13, 1685640), (15, 1460888), (20, 1095666), (22, 996060), (24, 913055), (26, 842820), (30, 730444), (33, 664040), (39, 561880), (40, 547833), (44, 498030), (52, 421410), (55, 398424), (60, 365222), (65, 337128), (66, 332020), (78, 280940), (88, 249015), (104, 210705), (110, 199212), (120, 182611), (130, 168564), (132, 166010), (143, 153240), (156, 140470), (165, 132808), (195, 112376), (220, 99606), (260, 84282), (264, 83005), (286, 76620), (312, 70235), (330, 66404), (390, 56188), (429, 51080), (440, 49803), (520, 42141), (572, 38310), (660, 33202), (715, 30648), (780, 28094), (858, 25540), (1144, 19155), (1277, 17160), (1320, 16601), (1430, 15324), (1560, 14047), (1716, 12770), (2145, 10216), (2554, 8580), (2860, 7662), (3432, 6385), (3831, 5720), (4290, 5108)]