20496490720

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{77969}}^1$

素因数の和:78068

約数の個数: 96

約数和(自身を含む): 50928756480

約数和(自身を除く): 30432265760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 53, 62, 80, 106, 124, 155, 160, 212, 248, 265, 310, 424, 496, 530, 620, 848, 992, 1060, 1240, 1643, 1696, 2120, 2480, 3286, 4240, 4960, 6572, 8215, 8480, 13144, 16430, 26288, 32860, 52576, 65720, 77969, 131440, 155938, 262880, 311876, 389845, 623752, 779690, 1247504, 1559380, 2417039, 2495008, 3118760, 4132357, 4834078, 6237520, 8264714, 9668156, 12085195, 12475040, 16529428, 19336312, 20661785, 24170390, 33058856, 38672624, 41323570, 48340780, 66117712, 77345248, 82647140, 96681560, 128103067, 132235424, 165294280, 193363120, 256206134, 330588560, 386726240, 512412268, 640515335, 661177120, 1024824536, 1281030670, 2049649072, 2562061340, 4099298144, 5124122680, 10248245360, 20496490720]

約数ペア:

[(1, 20496490720), (2, 10248245360), (4, 5124122680), (5, 4099298144), (8, 2562061340), (10, 2049649072), (16, 1281030670), (20, 1024824536), (31, 661177120), (32, 640515335), (40, 512412268), (53, 386726240), (62, 330588560), (80, 256206134), (106, 193363120), (124, 165294280), (155, 132235424), (160, 128103067), (212, 96681560), (248, 82647140), (265, 77345248), (310, 66117712), (424, 48340780), (496, 41323570), (530, 38672624), (620, 33058856), (848, 24170390), (992, 20661785), (1060, 19336312), (1240, 16529428), (1643, 12475040), (1696, 12085195), (2120, 9668156), (2480, 8264714), (3286, 6237520), (4240, 4834078), (4960, 4132357), (6572, 3118760), (8215, 2495008), (8480, 2417039), (13144, 1559380), (16430, 1247504), (26288, 779690), (32860, 623752), (52576, 389845), (65720, 311876), (77969, 262880), (131440, 155938)]