21454920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{977}}^1$

素因数の和:1055

約数の個数: 96

約数和(自身を含む): 70944120

約数和(自身を除く): 49489200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 61, 72, 90, 120, 122, 180, 183, 244, 305, 360, 366, 488, 549, 610, 732, 915, 977, 1098, 1220, 1464, 1830, 1954, 2196, 2440, 2745, 2931, 3660, 3908, 4392, 4885, 5490, 5862, 7320, 7816, 8793, 9770, 10980, 11724, 14655, 17586, 19540, 21960, 23448, 29310, 35172, 39080, 43965, 58620, 59597, 70344, 87930, 117240, 119194, 175860, 178791, 238388, 297985, 351720, 357582, 476776, 536373, 595970, 715164, 893955, 1072746, 1191940, 1430328, 1787910, 2145492, 2383880, 2681865, 3575820, 4290984, 5363730, 7151640, 10727460, 21454920]

約数ペア:

[(1, 21454920), (2, 10727460), (3, 7151640), (4, 5363730), (5, 4290984), (6, 3575820), (8, 2681865), (9, 2383880), (10, 2145492), (12, 1787910), (15, 1430328), (18, 1191940), (20, 1072746), (24, 893955), (30, 715164), (36, 595970), (40, 536373), (45, 476776), (60, 357582), (61, 351720), (72, 297985), (90, 238388), (120, 178791), (122, 175860), (180, 119194), (183, 117240), (244, 87930), (305, 70344), (360, 59597), (366, 58620), (488, 43965), (549, 39080), (610, 35172), (732, 29310), (915, 23448), (977, 21960), (1098, 19540), (1220, 17586), (1464, 14655), (1830, 11724), (1954, 10980), (2196, 9770), (2440, 8793), (2745, 7816), (2931, 7320), (3660, 5862), (3908, 5490), (4392, 4885)]