21860370

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{4957}}^1$

素因数の和:4984

約数の個数: 72

約数和(自身を含む): 66129804

約数和(自身を除く): 44269434

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2205, 4410, 4957, 9914, 14871, 24785, 29742, 34699, 44613, 49570, 69398, 74355, 89226, 104097, 148710, 173495, 208194, 223065, 242893, 312291, 346990, 446130, 485786, 520485, 624582, 728679, 1040970, 1214465, 1457358, 1561455, 2186037, 2428930, 3122910, 3643395, 4372074, 7286790, 10930185, 21860370]

約数ペア:

[(1, 21860370), (2, 10930185), (3, 7286790), (5, 4372074), (6, 3643395), (7, 3122910), (9, 2428930), (10, 2186037), (14, 1561455), (15, 1457358), (18, 1214465), (21, 1040970), (30, 728679), (35, 624582), (42, 520485), (45, 485786), (49, 446130), (63, 346990), (70, 312291), (90, 242893), (98, 223065), (105, 208194), (126, 173495), (147, 148710), (210, 104097), (245, 89226), (294, 74355), (315, 69398), (441, 49570), (490, 44613), (630, 34699), (735, 29742), (882, 24785), (1470, 14871), (2205, 9914), (4410, 4957)]