212800120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1$

素因数の和:405

約数の個数: 128

約数和(自身を含む): 546416640

約数和(自身を除く): 333616520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 43, 52, 62, 65, 86, 104, 124, 130, 155, 172, 215, 248, 260, 307, 310, 344, 403, 430, 520, 559, 614, 620, 806, 860, 1118, 1228, 1240, 1333, 1535, 1612, 1720, 2015, 2236, 2456, 2666, 2795, 3070, 3224, 3991, 4030, 4472, 5332, 5590, 6140, 6665, 7982, 8060, 9517, 10664, 11180, 12280, 13201, 13330, 15964, 16120, 17329, 19034, 19955, 22360, 26402, 26660, 31928, 34658, 38068, 39910, 47585, 52804, 53320, 66005, 69316, 76136, 79820, 86645, 95170, 105608, 123721, 132010, 138632, 159640, 171613, 173290, 190340, 247442, 264020, 343226, 346580, 380680, 409231, 494884, 528040, 618605, 686452, 693160, 818462, 858065, 989768, 1237210, 1372904, 1636924, 1716130, 2046155, 2474420, 3273848, 3432260, 4092310, 4948840, 5320003, 6864520, 8184620, 10640006, 16369240, 21280012, 26600015, 42560024, 53200030, 106400060, 212800120]

約数ペア:

[(1, 212800120), (2, 106400060), (4, 53200030), (5, 42560024), (8, 26600015), (10, 21280012), (13, 16369240), (20, 10640006), (26, 8184620), (31, 6864520), (40, 5320003), (43, 4948840), (52, 4092310), (62, 3432260), (65, 3273848), (86, 2474420), (104, 2046155), (124, 1716130), (130, 1636924), (155, 1372904), (172, 1237210), (215, 989768), (248, 858065), (260, 818462), (307, 693160), (310, 686452), (344, 618605), (403, 528040), (430, 494884), (520, 409231), (559, 380680), (614, 346580), (620, 343226), (806, 264020), (860, 247442), (1118, 190340), (1228, 173290), (1240, 171613), (1333, 159640), (1535, 138632), (1612, 132010), (1720, 123721), (2015, 105608), (2236, 95170), (2456, 86645), (2666, 79820), (2795, 76136), (3070, 69316), (3224, 66005), (3991, 53320), (4030, 52804), (4472, 47585), (5332, 39910), (5590, 38068), (6140, 34658), (6665, 31928), (7982, 26660), (8060, 26402), (9517, 22360), (10664, 19955), (11180, 19034), (12280, 17329), (13201, 16120), (13330, 15964)]