209901900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{503}}^1$

素因数の和:640

約数の個数: 144

約数和(自身を含む): 661457664

約数和(自身を除く): 451555764

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 107, 130, 150, 156, 195, 214, 260, 300, 321, 325, 390, 428, 503, 535, 642, 650, 780, 975, 1006, 1070, 1284, 1300, 1391, 1509, 1605, 1950, 2012, 2140, 2515, 2675, 2782, 3018, 3210, 3900, 4173, 5030, 5350, 5564, 6036, 6420, 6539, 6955, 7545, 8025, 8346, 10060, 10700, 12575, 13078, 13910, 15090, 16050, 16692, 19617, 20865, 25150, 26156, 27820, 30180, 32100, 32695, 34775, 37725, 39234, 41730, 50300, 53821, 65390, 69550, 75450, 78468, 83460, 98085, 104325, 107642, 130780, 139100, 150900, 161463, 163475, 196170, 208650, 215284, 269105, 322926, 326950, 392340, 417300, 490425, 538210, 645852, 653900, 699673, 807315, 980850, 1076420, 1345525, 1399346, 1614630, 1961700, 2099019, 2691050, 2798692, 3229260, 3498365, 4036575, 4198038, 5382100, 6996730, 8073150, 8396076, 10495095, 13993460, 16146300, 17491825, 20990190, 34983650, 41980380, 52475475, 69967300, 104950950, 209901900]

約数ペア:

[(1, 209901900), (2, 104950950), (3, 69967300), (4, 52475475), (5, 41980380), (6, 34983650), (10, 20990190), (12, 17491825), (13, 16146300), (15, 13993460), (20, 10495095), (25, 8396076), (26, 8073150), (30, 6996730), (39, 5382100), (50, 4198038), (52, 4036575), (60, 3498365), (65, 3229260), (75, 2798692), (78, 2691050), (100, 2099019), (107, 1961700), (130, 1614630), (150, 1399346), (156, 1345525), (195, 1076420), (214, 980850), (260, 807315), (300, 699673), (321, 653900), (325, 645852), (390, 538210), (428, 490425), (503, 417300), (535, 392340), (642, 326950), (650, 322926), (780, 269105), (975, 215284), (1006, 208650), (1070, 196170), (1284, 163475), (1300, 161463), (1391, 150900), (1509, 139100), (1605, 130780), (1950, 107642), (2012, 104325), (2140, 98085), (2515, 83460), (2675, 78468), (2782, 75450), (3018, 69550), (3210, 65390), (3900, 53821), (4173, 50300), (5030, 41730), (5350, 39234), (5564, 37725), (6036, 34775), (6420, 32695), (6539, 32100), (6955, 30180), (7545, 27820), (8025, 26156), (8346, 25150), (10060, 20865), (10700, 19617), (12575, 16692), (13078, 16050), (13910, 15090)]