1988422400

素因数分解:

$2^8\times 5^2\times {\mathrm{97}}^1\times {\mathrm{3203}}^1$

素因数の和:3326

約数の個数: 108

約数和(自身を含む): 4973947272

約数和(自身を除く): 2985524872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 97, 100, 128, 160, 194, 200, 256, 320, 388, 400, 485, 640, 776, 800, 970, 1280, 1552, 1600, 1940, 2425, 3104, 3200, 3203, 3880, 4850, 6208, 6400, 6406, 7760, 9700, 12416, 12812, 15520, 16015, 19400, 24832, 25624, 31040, 32030, 38800, 51248, 62080, 64060, 77600, 80075, 102496, 124160, 128120, 155200, 160150, 204992, 256240, 310400, 310691, 320300, 409984, 512480, 620800, 621382, 640600, 819968, 1024960, 1242764, 1281200, 1553455, 2049920, 2485528, 2562400, 3106910, 4099840, 4971056, 5124800, 6213820, 7767275, 9942112, 10249600, 12427640, 15534550, 19884224, 20499200, 24855280, 31069100, 39768448, 49710560, 62138200, 79536896, 99421120, 124276400, 198842240, 248552800, 397684480, 497105600, 994211200, 1988422400]

約数ペア:

[(1, 1988422400), (2, 994211200), (4, 497105600), (5, 397684480), (8, 248552800), (10, 198842240), (16, 124276400), (20, 99421120), (25, 79536896), (32, 62138200), (40, 49710560), (50, 39768448), (64, 31069100), (80, 24855280), (97, 20499200), (100, 19884224), (128, 15534550), (160, 12427640), (194, 10249600), (200, 9942112), (256, 7767275), (320, 6213820), (388, 5124800), (400, 4971056), (485, 4099840), (640, 3106910), (776, 2562400), (800, 2485528), (970, 2049920), (1280, 1553455), (1552, 1281200), (1600, 1242764), (1940, 1024960), (2425, 819968), (3104, 640600), (3200, 621382), (3203, 620800), (3880, 512480), (4850, 409984), (6208, 320300), (6400, 310691), (6406, 310400), (7760, 256240), (9700, 204992), (12416, 160150), (12812, 155200), (15520, 128120), (16015, 124160), (19400, 102496), (24832, 80075), (25624, 77600), (31040, 64060), (32030, 62080), (38800, 51248)]