2789861220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1\times {\mathrm{521}}^1$

素因数の和:1026

約数の個数: 144

約数和(自身を含む): 8618762880

約数和(自身を除く): 5828901660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 419, 426, 521, 639, 710, 838, 852, 1042, 1065, 1257, 1278, 1420, 1563, 1676, 2084, 2095, 2130, 2514, 2556, 2605, 3126, 3195, 3771, 4190, 4260, 4689, 5028, 5210, 6252, 6285, 6390, 7542, 7815, 8380, 9378, 10420, 12570, 12780, 15084, 15630, 18756, 18855, 23445, 25140, 29749, 31260, 36991, 37710, 46890, 59498, 73982, 75420, 89247, 93780, 110973, 118996, 147964, 148745, 178494, 184955, 218299, 221946, 267741, 297490, 332919, 356988, 369910, 436598, 443892, 446235, 535482, 554865, 594980, 654897, 665838, 739820, 873196, 892470, 1070964, 1091495, 1109730, 1309794, 1331676, 1338705, 1664595, 1784940, 1964691, 2182990, 2219460, 2619588, 2677410, 3274485, 3329190, 3929382, 4365980, 5354820, 6548970, 6658380, 7858764, 9823455, 13097940, 15499229, 19646910, 30998458, 39293820, 46497687, 61996916, 77496145, 92995374, 139493061, 154992290, 185990748, 232488435, 278986122, 309984580, 464976870, 557972244, 697465305, 929953740, 1394930610, 2789861220]

約数ペア:

[(1, 2789861220), (2, 1394930610), (3, 929953740), (4, 697465305), (5, 557972244), (6, 464976870), (9, 309984580), (10, 278986122), (12, 232488435), (15, 185990748), (18, 154992290), (20, 139493061), (30, 92995374), (36, 77496145), (45, 61996916), (60, 46497687), (71, 39293820), (90, 30998458), (142, 19646910), (180, 15499229), (213, 13097940), (284, 9823455), (355, 7858764), (419, 6658380), (426, 6548970), (521, 5354820), (639, 4365980), (710, 3929382), (838, 3329190), (852, 3274485), (1042, 2677410), (1065, 2619588), (1257, 2219460), (1278, 2182990), (1420, 1964691), (1563, 1784940), (1676, 1664595), (2084, 1338705), (2095, 1331676), (2130, 1309794), (2514, 1109730), (2556, 1091495), (2605, 1070964), (3126, 892470), (3195, 873196), (3771, 739820), (4190, 665838), (4260, 654897), (4689, 594980), (5028, 554865), (5210, 535482), (6252, 446235), (6285, 443892), (6390, 436598), (7542, 369910), (7815, 356988), (8380, 332919), (9378, 297490), (10420, 267741), (12570, 221946), (12780, 218299), (15084, 184955), (15630, 178494), (18756, 148745), (18855, 147964), (23445, 118996), (25140, 110973), (29749, 93780), (31260, 89247), (36991, 75420), (37710, 73982), (46890, 59498)]