7851390520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{1039}}^1$

素因数の和:1293

約数の個数: 128

約数和(自身を含む): 19034496000

約数和(自身を除く): 11183105480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 163, 190, 244, 305, 326, 380, 488, 610, 652, 760, 815, 1039, 1159, 1220, 1304, 1630, 2078, 2318, 2440, 3097, 3260, 4156, 4636, 5195, 5795, 6194, 6520, 8312, 9272, 9943, 10390, 11590, 12388, 15485, 19741, 19886, 20780, 23180, 24776, 30970, 39482, 39772, 41560, 46360, 49715, 61940, 63379, 78964, 79544, 98705, 99430, 123880, 126758, 157928, 169357, 188917, 197410, 198860, 253516, 316895, 338714, 377834, 394820, 397720, 507032, 633790, 677428, 755668, 789640, 846785, 944585, 1204201, 1267580, 1354856, 1511336, 1693570, 1889170, 2408402, 2535160, 3217783, 3387140, 3778340, 4816804, 6021005, 6435566, 6774280, 7556680, 9633608, 10330777, 12042010, 12871132, 16088915, 20661554, 24084020, 25742264, 32177830, 41323108, 48168040, 51653885, 64355660, 82646216, 103307770, 128711320, 196284763, 206615540, 392569526, 413231080, 785139052, 981423815, 1570278104, 1962847630, 3925695260, 7851390520]

約数ペア:

[(1, 7851390520), (2, 3925695260), (4, 1962847630), (5, 1570278104), (8, 981423815), (10, 785139052), (19, 413231080), (20, 392569526), (38, 206615540), (40, 196284763), (61, 128711320), (76, 103307770), (95, 82646216), (122, 64355660), (152, 51653885), (163, 48168040), (190, 41323108), (244, 32177830), (305, 25742264), (326, 24084020), (380, 20661554), (488, 16088915), (610, 12871132), (652, 12042010), (760, 10330777), (815, 9633608), (1039, 7556680), (1159, 6774280), (1220, 6435566), (1304, 6021005), (1630, 4816804), (2078, 3778340), (2318, 3387140), (2440, 3217783), (3097, 2535160), (3260, 2408402), (4156, 1889170), (4636, 1693570), (5195, 1511336), (5795, 1354856), (6194, 1267580), (6520, 1204201), (8312, 944585), (9272, 846785), (9943, 789640), (10390, 755668), (11590, 677428), (12388, 633790), (15485, 507032), (19741, 397720), (19886, 394820), (20780, 377834), (23180, 338714), (24776, 316895), (30970, 253516), (39482, 198860), (39772, 197410), (41560, 188917), (46360, 169357), (49715, 157928), (61940, 126758), (63379, 123880), (78964, 99430), (79544, 98705)]