400998780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{24481}}^1$

素因数の和:24516

約数の個数: 144

約数和(自身を含む): 1497123264

約数和(自身を除く): 1096124484

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 5460, 8190, 16380, 24481, 48962, 73443, 97924, 122405, 146886, 171367, 220329, 244810, 293772, 318253, 342734, 367215, 440658, 489620, 514101, 636506, 685468, 734430, 856835, 881316, 954759, 1028202, 1101645, 1273012, 1468860, 1542303, 1591265, 1713670, 1909518, 2056404, 2203290, 2227771, 2570505, 2864277, 3084606, 3182530, 3427340, 3819036, 4406580, 4455542, 4773795, 5141010, 5728554, 6169212, 6365060, 6683313, 7711515, 8911084, 9547590, 10282020, 11138855, 11457108, 13366626, 14321385, 15423030, 19095180, 20049939, 22277710, 26733252, 28642770, 30846060, 33416565, 40099878, 44555420, 57285540, 66833130, 80199756, 100249695, 133666260, 200499390, 400998780]

約数ペア:

[(1, 400998780), (2, 200499390), (3, 133666260), (4, 100249695), (5, 80199756), (6, 66833130), (7, 57285540), (9, 44555420), (10, 40099878), (12, 33416565), (13, 30846060), (14, 28642770), (15, 26733252), (18, 22277710), (20, 20049939), (21, 19095180), (26, 15423030), (28, 14321385), (30, 13366626), (35, 11457108), (36, 11138855), (39, 10282020), (42, 9547590), (45, 8911084), (52, 7711515), (60, 6683313), (63, 6365060), (65, 6169212), (70, 5728554), (78, 5141010), (84, 4773795), (90, 4455542), (91, 4406580), (105, 3819036), (117, 3427340), (126, 3182530), (130, 3084606), (140, 2864277), (156, 2570505), (180, 2227771), (182, 2203290), (195, 2056404), (210, 1909518), (234, 1713670), (252, 1591265), (260, 1542303), (273, 1468860), (315, 1273012), (364, 1101645), (390, 1028202), (420, 954759), (455, 881316), (468, 856835), (546, 734430), (585, 685468), (630, 636506), (780, 514101), (819, 489620), (910, 440658), (1092, 367215), (1170, 342734), (1260, 318253), (1365, 293772), (1638, 244810), (1820, 220329), (2340, 171367), (2730, 146886), (3276, 122405), (4095, 97924), (5460, 73443), (8190, 48962), (16380, 24481)]