28409210.000000000

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{631}}^1$

素因数の和:783

約数の個数: 64

約数和(自身を含む): 519837696

約数和(自身を除く): 263001766

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 101, 130, 155, 202, 310, 403, 505, 631, 806, 1010, 1262, 1313, 2015, 2626, 3131, 3155, 4030, 6262, 6310, 6565, 8203, 13130, 15655, 16406, 19561, 31310, 39122, 40703, 41015, 63731, 81406, 82030, 97805, 127462, 195610, 203515, 254293, 318655, 407030, 508586, 637310, 828503, 1271465, 1657006, 1975661, 2542930, 3951322, 4142515, 8285030, 9878305, 19756610, 25683593, 51367186, 128417965, 256835930]

約数ペア:

[(1, 256835930), (2, 128417965), (5, 51367186), (10, 25683593), (13, 19756610), (26, 9878305), (31, 8285030), (62, 4142515), (65, 3951322), (101, 2542930), (130, 1975661), (155, 1657006), (202, 1271465), (310, 828503), (403, 637310), (505, 508586), (631, 407030), (806, 318655), (1010, 254293), (1262, 203515), (1313, 195610), (2015, 127462), (2626, 97805), (3131, 82030), (3155, 81406), (4030, 63731), (6262, 41015), (6310, 40703), (6565, 39122), (8203, 31310), (13130, 19561), (15655, 16406)]