20185751560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{8963}}^1$

素因数の和:9119

約数の個数: 128

約数和(自身を含む): 50419272960

約数和(自身を除く): 30233521400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 71, 104, 122, 130, 142, 244, 260, 284, 305, 355, 488, 520, 568, 610, 710, 793, 923, 1220, 1420, 1586, 1846, 2440, 2840, 3172, 3692, 3965, 4331, 4615, 6344, 7384, 7930, 8662, 8963, 9230, 15860, 17324, 17926, 18460, 21655, 31720, 34648, 35852, 36920, 43310, 44815, 56303, 71704, 86620, 89630, 112606, 116519, 173240, 179260, 225212, 233038, 281515, 358520, 450424, 466076, 546743, 563030, 582595, 636373, 932152, 1093486, 1126060, 1165190, 1272746, 2186972, 2252120, 2330380, 2545492, 2733715, 3181865, 4373944, 4660760, 5090984, 5467430, 6363730, 7107659, 8272849, 10934860, 12727460, 14215318, 16545698, 21869720, 25454920, 28430636, 33091396, 35538295, 38818753, 41364245, 56861272, 66182792, 71076590, 77637506, 82728490, 142153180, 155275012, 165456980, 194093765, 284306360, 310550024, 330913960, 388187530, 504643789, 776375060, 1009287578, 1552750120, 2018575156, 2523218945, 4037150312, 5046437890, 10092875780, 20185751560]

約数ペア:

[(1, 20185751560), (2, 10092875780), (4, 5046437890), (5, 4037150312), (8, 2523218945), (10, 2018575156), (13, 1552750120), (20, 1009287578), (26, 776375060), (40, 504643789), (52, 388187530), (61, 330913960), (65, 310550024), (71, 284306360), (104, 194093765), (122, 165456980), (130, 155275012), (142, 142153180), (244, 82728490), (260, 77637506), (284, 71076590), (305, 66182792), (355, 56861272), (488, 41364245), (520, 38818753), (568, 35538295), (610, 33091396), (710, 28430636), (793, 25454920), (923, 21869720), (1220, 16545698), (1420, 14215318), (1586, 12727460), (1846, 10934860), (2440, 8272849), (2840, 7107659), (3172, 6363730), (3692, 5467430), (3965, 5090984), (4331, 4660760), (4615, 4373944), (6344, 3181865), (7384, 2733715), (7930, 2545492), (8662, 2330380), (8963, 2252120), (9230, 2186972), (15860, 1272746), (17324, 1165190), (17926, 1126060), (18460, 1093486), (21655, 932152), (31720, 636373), (34648, 582595), (35852, 563030), (36920, 546743), (43310, 466076), (44815, 450424), (56303, 358520), (71704, 281515), (86620, 233038), (89630, 225212), (112606, 179260), (116519, 173240)]